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In-situ nanopolishing by nanolubricants for enhanced elastohydrodynamic lubrication.
- Source :
-
Wear . Apr2013, Vol. 301 Issue 1/2, p137-143. 7p. - Publication Year :
- 2013
-
Abstract
- Abstract: This paper describes a method of utilizing oil-based nanolubricants containing abrasive nanoparticles for in-situ nanopolishing (ISN) of surfaces of rolling elements. Nanopolishing reduces the composite surface roughness of bearing elements and results in an increased film thickness ratio. Using a four-ball tester, the test and material conditions such as normal load, rotational speed, and initial surface roughness of balls were selected so that the initial film thickness ratio λ varied in the 1–3 range, i.e. within the partial (mixed) elastohydrodynamic (EHL) regime. The lubricant was either engine oil or engine oil-based nanolubricants containing diamond nanoparticles. The rolling ring track on the top ball was examined by a non-contact profilometer. The root mean square (RMS) roughness of the wear track using the nanolubricant was decreased. In-situ nanopolishing by the nanolubricant resulted in a significant increase in the film thickness ratio and a lower frictional torque. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00431648
- Volume :
- 301
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Wear
- Publication Type :
- Academic Journal
- Accession number :
- 89120933
- Full Text :
- https://doi.org/10.1016/j.wear.2013.01.056